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Table 2 Triangulation error analysis—MSER

From: Multi-view 3D skin feature recognition and localization for patient tracking in spinal surgery applications

 

MSER

Patient no.

1

2

3

4

5

6

7

8

TOT

Analyzed regions

1

1

1

7

11

3

7

3

ALL

Area [\(\hbox {cm}^2\)]

57.8

18.6

27.6

183.9

232.8

75.5

80.0

29.5

705.6

Number of features

366

125

60

1372

1511

264

1083

153

4934

Mean [mm]

0.167

0.162

0.176

0.191

0.269

0.164

0.170

0.214

0.207

Std deviation [mm]

0.110

0.088

0.099

0.122

0.159

0.109

0.123

0.128

0.139

Features/\(\hbox {cm}^2\)

6.3

6.7

2.2

7.5

6.5

3.5

13.5

5.2

7.0

Rms [mm]

0.200

0.184

0.202

0.226

0.313

0.197

0.210

0.249

0.249

Min [m]

0.377

3.712

1.252

0.328

0.009

0.251

0.008

5.230

0.008

Quartile 1 [mm]

0.068

0.106

0.103

0.091

0.136

0.066

0.068

0.108

0.091

Median [mm]

0.164

0.160

0.188

0.181

0.267

0.150

0.149

0.190

0.190

Quartile 3 [mm]

0.244

0.218

0.241

0.276

0.389

0.242

0.247

0.314

0.303

Max [mm]

0.448

0.373

0.427

0.537

0.649

0.422

0.593

0.518

0.649